Cutter blade and a holder therefor



May 30, 1950 J. A. KLoD GUTTER BLADE AND A HOLDER THEREEOR Filed June15, 1949 3 a ill-I l.

"IWI (if Patented May 30, 1.9510

'UNI TED .PATE NT `'Of-F F lCE CUTTER BLADE AND .A .Homan THEREFOP.

John lAf-Klod, Chicago, Ill.

Application-.tune 15, 19u-serial Naf-99,236

7 Claims.

My invention relates to certain 'new vand useful improvements in cutterblades and a holder therefor especially adapted for use in connectionwith 'meat grinders and the like. As 'such the vinvention has for its'principal object the `provision of an improved and simplifiedconstruction which will be efficient in use and economical inmanufacture.

An important `object of my invention 4is 'the `provision of "anarrangement for Yconnecting-and 'mounting the cutting blades withrespect `to 'the holder without the employmentof ^screws-or`other -likeelements, kthe arrangement facilitating the "removal "of the 4cuttingblades `quickly and without `the use-of itoolsr'thereon *othery than-"an'in- 'strument for Vstriking a, portion of the 'cutting blade 'todislodge it' from attached --position with respect v'to the holder.

Another vand-equally important yobject 'of the invention yis "the`provision of a cutter blade -in 'which :the mounting shank is offsetbelow `-and "laterally in `parallel `relation with 'respect to thecutting -edge of vthe f4blade, thereby to presenta *cutting blade havinga relatively wide `shank `:whichpermitsAtheblade to be frequently sharp-'tened-'without destroying its usefulness, `thus providing a cuttingblade having exceptional "longevity,

'ments andholder;

Fig "2 is an elevational view illustrating my Y'improved holder with thecutting elements in mounted position "with respect thereto;

Fig. 3 is a fragmentary view of vthe holder shown in Fig. 2 with theblades removed therefrom;

Fig. liis ya sectional detail view taken substantially online A-t ofFig. 3.;

Fig.,5 is a sectional detail View taken substantially :n` line y5 5 ofFig. 3;

Fig. V(iis a perspective View of one of the cutting blades .embodied 4inthe invention;

'Fig. .7 Yis .a perspective View of the blade illustrated in vFig..viewed from the opposite side;

4-Fig isanend View of theblade illustrated in Fig. 6 looking in thedirection of the arrow X;

--a -latch lip 32.

Fig 9 is a'n endviewtaken substantiallyonline 9-"9 "of Fig. 2; 'and Fig.'10 vis a fragmentary view oi `th'e holder showing the rst "step inthepperation'of mountrin'g. the cutting blade thereon.

The several objects of my Iinvention V'are accomplished "by the`preferred form oi' VKconstruction Yillustrated in "the accompanyingdrawings Land in which drawings a conventional lmeat grinder isindicated at i8. vlThis meat grinder "includes a mouth portion il-throughwhich @the lma-terial tobe ground may be lintroduced into thevrelativelyelongatedgrindingchamber lf2. freed `screw I3 is arranged ona shaft -I'l-'haVi-ng an yoperating handle l5 for feeding the meat`4introvkduced'throughthe -mouth -into -thelgrinding=cham- -ber towardthe grinding fblades, which -Jgrinder 'blades cooperate with r aperforated :plate it mounted :at Tthe discharge "end ofr the grindingchamber l2.

My improved holder is indicated at 'il and includes a .hub ITB ofvrectangular formation and mounted in the Iconventional manner upon theshaft Hi to :present to the perforated pla-.te iii the :cutting blades.Extending from this hub are radially disposed :arms IE and :23, the.arms i9 being-offset with respect to-each other and ex-.tendingsubstantially at right angles .with .respect to the arms Eil,whichlike-theiarms filmare like- -wise oiset with Arespect -to :eachother.

In the lead side edge `portion 22 Vof 'each .arm there is formed anelongated groeve 23,7wi-th .the

groovefs of y'one-armbisecting as at 2t the groove -lof an tad-jacentarm, to provide an open -slot .f2-ii'.

The louter Vend portions -of the v'groove l2"3 of -each -arm terminateinto an :undercut .recess 26.

4Carried by the hub I3 and traversing Yeach oi the grooves 23 is a pin27 which serves las .-astul- -crurn for the cutting blades 4.18 .now tobe described. n

-Each of thesecuttingbladesis formed from an elongated strip of*material and each provides -a shank 29. The .-innerend por-tion `ofthis-shank 29 provides a semi-circular recess 32? which -is adapted -toreceive the .pin .2l to complete the `fulcrum"connection between theblade-'and vthe pin -2-1, facilitating the vmounting of the shank 29 inits groove 23 in a manner to -be presently explained.

This end portion of the shank 29 also provides a laterally extendingflug 3l which may be `formed by `striking the .same from the Ashank 29.

The opposite Vendiportion ofthe shank 2.9 provides rEh-is latch lip 32is provided by forming in the shank 29 a slit 33 which extends less thanthe complete distance across the blade. That portion of the shankproviding the latching lip 32-is bent from alignment with the shank 26so that the latching lip 32 will be offset with respect to the shank 29for reasons presently pointed out.

The blade 28 further provides an intermediate web 34 which integrallyconnects the shank 29 with a ange 35, the outer edge 36 of which isground or otherwise sharpened to provide a cutting edge. As this iiangeis of a substantial width, it will be apparent that the cutting edge 36may be ground frequently, thereby prolonging its longevity.

Each blade 28 is mounted in its respective groove 23 in the followingmanner:

The end portion of the blade providing the recess 36 is projected intothe groove 23 to dispose the blade 28 at an angle with respect to thearm in which the groove is formed, this disposing the adjacent pin 21 inthe recess 3S whereby to provide a fulcrum connection between the blade28 and the pin 21. The blade 2B is then pivoted about the pin 21 tobring the latching lip into position above the undercut recess 26. Inthis position of the blade 28 with respect to its supporting arm, thepin 21 will be disposed in the recess 36 and a latching nger 36 will bedisposed beneath the pin 21 and the latching lip 32 ready to be sprungthrough the outer end portion of the groove 23, to be sprung into theundercut recess 26. This is accomplished by striking the outer end ofthe blade with a suitable mallet or other instrument, such for examplethe wooden handle portion of a knife or the like. By striking the outerend of the blade with such instrument, the blade 28 is pivoted about itspin 21 and the latch lip 32 forced through the groove 23 to a positionbeneath the ledge 26 of the undercut recess 2B.

In this position the blade is iirmly held in position, prevented fromlateral displacement from the groove 23 by reason of the latching lip 32engaging the ledge 26 of the undercut recess 26 and by the engagement ofthe latching finger 36 beneath the pin 21. The blade 28 is alsoprevented from moving longitudinally within the groove 23 by reason ofthe engagement of the projection or lug 3l in the slot 25.

The outer end 31 of each blade projects beyond the outer end of each armso as to present a, portion of the blade which may be struck on the sideopposite the cutting edge 26 thereof by the hereinbefore referred tomallet or other instrument, to spring the latching lip 32 from itslatched position within the undercut recess 26, thereby to facilitateremoval of the blade 28 from its respective arm.

The intermediate portion 34 which connects the flange 35 with the shank29 is curved in cross section to dispose the cutting edge 36 oisetlaterally with respect to the shank 29 to provide an inclined surface 38on the blade for bearing engagement with a tapered portion 39 of the armwith which the blade is associated. This arrangement strengthens theblade and restrains the same from vibrating or chattering during thecutting operation of the meat.

From the foregoing description, it is apparent that my improved blademay be mounted in a position upon its holder arm Without the use ofconnecting elements such as screws, bolts or other like elements, andthat by a simple operation of striking the blade by a suitableinstrument the blade may be mounted in the groove or quickly and easilyremoved therefrom.

The present invention constitutes an improvement over that disclosed inmy prior patents, Nos. 1,869,218, 1,869,219 and 1,869,220.

While I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, this is capable ofvariation and modiiication without departing from the spirit of theinvention. I, therefore, do not wish to be limited to the precisedetails of construction set forth, .but desire to avail myself of suchvariations and modifications as come within the scope of the appendedclaims.

Having thus described my invention, what I claim as new and desire toprotect by Letters Patent is:

l. The combination with a blade holder for a grinding machine in whichthe holder is provided with a blade receiving groove having at one endan undercut recess and a pin extending transversely of the groove at theopposite end of the groove from the recess, of a blade adapted to bemounted in said groove comprising a shank portion providing a recess forthe reception of said pin to provide a fulcrum connection between theblade and the holder, said blade providing at its end opposite the endproviding said recess a latching lip adapted for yieldable engagement insaid undercut recess when said shank is mounted in said groove, and acutting edge provided by said blade opposite said shank.

2. The combination with a blade holder for a grinding machine in whichthe holder is provided with a blade receiving groove having at one endan undercut recess and a pin extending transversely of the groove at theopposite end of the groove from the recess, of a blade adapted to bemounted in said groove comprising a shank portion providing a recess forthe reception of said pin to provide a fulcrum connection between theblade and the holder, said blade providing at its end opposite the endproviding said recess a latching lip adapted for yieldable engagement insaid undercut recess when said shank is mounted in said groove, and acutting edge provided by said blade opposite said shank, said cuttingedge being integrally connected with said shank by an intermediateportion curved in cross section to dispose the cutting edge in a planeoffset with respect to the shank.

3. The combination with a blade holder for a grinding machine in whichthe holder is provided with a blade receiving groove having at one endan undercut recess and a pin extending transversely of the groove at theopposite end of the groove from the recess, of a blade adapted to bemounted in said groove comprising a shank portion providing a recess forthe reception of said pin to provide a fulcrurn connection between theblade and the holder, said blade providing at its end opposite the endproviding said recess a latching lip adapted for yieldable engagement insaid undercut recess when said shank is mounted in said groove, and acutting edge provided by said blade opposite said shank, said latchinglip being severed from said shank by a slit and being oiset laterallywith respect to said shank.

4. The combination with a blade holder for a grinding machine in whichthe holder is provided with a blade receiving groove having at one endan undercut recess and a pin extending transversely of the groove at theopposite end of the groove from the recess, of a blade adapted to bemounted in said groove comprising a shank portion providing a recess forthe reception of said pin to provide a fulcrum connection between theblade and the holder, said blade providing at its end opposite the endproviding said recess a latching lip adapted for yieldable engagement insaid undercut recess when said shank is mounted in said groove, and acutting edge provided by said blade opposite said shank, said cuttingedge being integrally connected with said shank by an intermediateportion curved in cross section to dispose the cutting edge in a planeoiset with respect to the shank, said latching lip being severed fromsaid shank by a slit and being offset laterally with respect to saidshank.

5. For a combination comprising a holder for a meat grinder, said holderhaving an elongated groove formed therein with the outer end portion ofthe groove terminating into an undercut recess, a blade having a, shankportion mounted in said groove and a yieldable latching lip adapted toyieldably engage in said undercut recess, said latching lip being offsetlaterally with respect to said shank to effect yieldable connectionbetween the blade and said holder when said latching lip is positionedin said undercut recess, and means provided by said holder and saidblade to hold said blade and said latching lip from longitudinaldisplacement from said groove.

6. For a combination comprising a holder for a meat grinder, said holderhaving an elongated groove formed therein with the outer end portion ofthe groove terminating into an undercut recess, a blade having a shankportion mounted in said groove, and a yieldable latching lip adapted toyieldably engage in said undercut recess, said latching lip being osetlaterally with respect to said shank to effect yieldable connectionbetween the blade and said holder when said latching lip is positionedin said undercut recess, and means providing a fulcrum connectionbetween said blade and said holder to facilitate pivoting said blade ina direction to dispose said shank and said latching lip in said grooveand undercut recess respectively.

7. For a combination comprising a holder for a meat grinder, said holderhaving an elongated groove formed therein with the outer end portion ofthe groove terminating into an undercut recess, a blade having a shankportion mounted in said groove and a yieldable latching lip adapted toyieldably engage in said undercut recess, said latching lip being offsetlaterally with respect to said shank to effect yieldable connectionbetween the blade and said holder when said latching lip is positionedin said undercut recess, means provided by said holder and said blade tohold said blade and said latching lip from longitudinal displacementfrom said groove and means providing a fulcrum connection between saidblade and said holder to facilitate pivoting said blade in a directionto dispose said shank and said latching lip in said groove and undercutrecess respectively.

JOHN A. KLOD.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 1,651,856 Weiss Dec. 6, 19271,879,279 Jahn Sept. 27, 1932 2,173,366 Klod Sept. 19, 1939 2,196,455Klod Apr. 8, 1940

